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Proceedings Paper

The VSOP-2 Project: a second-generation space-VLBI mission ranging to mm-wavelengths
Author(s): Hisashi Hirabayashi; Yasuhiro Murata; Yoshiharu Asaki; Philip G. Edwards; Nanako Mochizuki; Michihiro C. Natori; Makoto Inoue; Tomofumi Umemoto; Seiji Kameno; Yusuke Kono; Masato Tsuboi; Takashi Kasuga
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Paper Abstract

The first Space-VLBI mission, VSOP, started successfully with the launch of the dedicated space-VLBI satellite HALCA in 1997. The mission has been in scientific operation in the 1.6 GHz and 5 GHz bands, and studies have been done mainly of the jet phenomena related to active galactic nuclei. Observing at higher frequencies has the advantage of less absorption through the ambient plasma and less contribution from scattering, and also has the merit of resulting in higher angular resolution observations. A second generation space-VLBI mission, VSOP-2, has been planned by the working group formed at ISAS/JAXA with many collaborators. The spacecraft is planned to observe in the 8, 22 and 43 GHz bands with cooled receivers for the two higher bands, and with a maximum angular resolution at 43 GHz (7 mm) of about 40 micro-arcseconds. The system design, including the spacecraft and ground facilities, will be introduced, and the impact for sub-mm space-VLBI further into the future will be discussed.

Paper Details

Date Published: 12 October 2004
PDF: 11 pages
Proc. SPIE 5487, Optical, Infrared, and Millimeter Space Telescopes, (12 October 2004); doi: 10.1117/12.563417
Show Author Affiliations
Hisashi Hirabayashi, ISAS/Japan Aerospace Exploration Agency (Japan)
Yasuhiro Murata, ISAS/Japan Aerospace Exploration Agency (Japan)
Yoshiharu Asaki, ISAS/Japan Aerospace Exploration Agency (Japan)
Philip G. Edwards, ISAS/Japan Aerospace Exploration Agency (Japan)
Nanako Mochizuki, ISAS/Japan Aerospace Exploration Agency (Japan)
Michihiro C. Natori, ISAS/Japan Aerospace Exploration Agency (Japan)
Makoto Inoue, National Astronomical Observatory of Japan (Japan)
Tomofumi Umemoto, National Astronomical Observatory of Japan (Japan)
Seiji Kameno, National Astronomical Observatory of Japan (Japan)
Yusuke Kono, National Astronomical Observatory of Japan (Japan)
Masato Tsuboi, National Astronomical Observatory of Japan (Japan)
Takashi Kasuga, Hosei Univ. (Japan)


Published in SPIE Proceedings Vol. 5487:
Optical, Infrared, and Millimeter Space Telescopes
John C. Mather, Editor(s)

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